I'm only speaking from my own perspective, and I realize it's not prudent to make blanket statements on either side of the argument as it does nothing for the problem itself.
Also, and I realize I'm probably alone with this one, but I try to stay away from the term "homophobia" considering it's literal translation is "irrational fear of men." But at the same time I realize that there is a very palpable fear amongst some heterosexual men of being engaged by homosexual men, and how that may play into sociological aspects of child rearing. It's my normal tendency to look inside things, not at them, so it's easier for me to see a situation from different angles.